Help a hardware noob upgrade

[Cool Buddy]

The RAM the graphics card uses is plugged or you can say built on to the graphics card itself, it has no connection to the normal RAM. That's why it is referred to as GDDR3 or GDDR5 and not just DDR.
Onboard graphics or IGP uses the system RAM. But if I'm correct, there are boards which have separate RAM for the IGP, I'm not sure of this.

 

[coderunknown]

The RAM the graphics card uses is plugged or you can say built on to the graphics card itself, it has no connection to the normal RAM. That's why it is referred to as GDDR3 or GDDR5 and not just DDR.
Onboard graphics or IGP uses the system RAM. But if I'm correct, there are boards which have separate RAM for the IGP, I'm not sure of this.

yes, some boards do have but limited only to AMD. sideport memory. but what i have seen (& read lot) total graphics boost is 5%. however if the IGP is OC, the total increase in IGP muscle is well over 50%.